Influence of Stray Inductance on Turn-off Characteristics of IGCT-MMC’s Device

LOU Yantao; LIU Qi

doi:10.13296/j.1001-1609.hva.2025.08.022

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Influence of Stray Inductance on Turn-off Characteristics of IGCT-MMC’s Device

Research & Analysis | 更新时间：2025-08-08

- Influence of Stray Inductance on Turn-off Characteristics of IGCT-MMC’s Device
- High Voltage Apparatus Vol. 61, Issue 8, Pages: 170-175(2025)
- 作者机构：
  
  1.清华大学电机工程与应用电子技术系，北京　100084
  2.西安西电电力系统有限公司，西安　710065
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2025.08.022
  CLC：
- Received：16 February 2025，
  
  Revised：11 May 2025，
  
  Published：16 August 2025
- 稿件说明：
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LOU Yantao, LIU Qi. Influence of Stray Inductance on Turn-off Characteristics of IGCT-MMC’s Device[J]. High voltage apparatus, 2025, 61(8): 170-175.
DOI：

LOU Yantao, LIU Qi. Influence of Stray Inductance on Turn-off Characteristics of IGCT-MMC’s Device[J]. High voltage apparatus, 2025, 61(8): 170-175. DOI： 10.13296/j.1001-1609.hva.2025.08.022.

摘要

MMC子模块内母排杂散电感影响IGCT和二极管关断性能。在分析子模块功率器件开关行为基础上，基于仿真计算，分析了IGCT-MMC子模块内各支路母排杂散电感对IGCT和二极管器件关断特性的影响。对比双脉冲试验和仿真计算结果，验证了仿真模型和分析结论的有效性。结果表明，当母排杂散电感，特别是当主换流回路杂散电感较大时，将显著提高IGCT和二极管的关断过冲电压，以及关断峰值功率和损耗。研究结果可为基于IGCT的MMC换流器优化设计提供参考。

Abstract

The stray inductance of busbars of MMC submodel affects the turn-off characteristics of the IGCTs and diodes. Based on the analysis of the switching behavior of the power devices in the MMC submodule

the influence of the stray inductance of each busbar of IGCT-MMC submodel on the turn-off characteristics of IGCT and diode device is analyzed based on the simualtino calcualtion. The double pulse test results and simulation results are compared and the effectiveness of the simulation model and analysis cnclusion is verified. The result shows that in case of large stray inductances of the busbars and the stray inductances of the main converter circuit in particular

the turn-off overshoot voltage

turn-off peak power and losses of the IGCTs and diodes are improved significantly. The research result in this paper can provide reference for the optimal design of MMC converter based on IGCT.

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华北电力大学电力系统保护与动态安全监控教育部重点实验室河北保定071003

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